Abstract:

How to compare two three dimensional brain images together if you don't know is the position of head equal on both images? The image study can take hours. A patient should not move during the study. In this MSc Thesis positron emission tomography (PET) brain images were used to examine movements and correction of movement between two images.The aim of this study was to examine is the deformable model suitable for registration of two images and movement corrections. The other main task was to compare surface based method to method, which is based on intensity values of image voxels. The main assumption was that brains are rigid body, which does not change their shape. In that case to find surface of brains from images with the deformable model and match these surface together it is possible to correct movements between two images.